CN217216952U - Light and color adjusting power supply device - Google Patents
Light and color adjusting power supply device Download PDFInfo
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- CN217216952U CN217216952U CN202220767409.6U CN202220767409U CN217216952U CN 217216952 U CN217216952 U CN 217216952U CN 202220767409 U CN202220767409 U CN 202220767409U CN 217216952 U CN217216952 U CN 217216952U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
An embodiment of the utility model provides a mixing of colors power supply unit adjusts luminance. The device comprises a power supply module, a color-mixing driving module and a light-emitting diode module; the first input end of the power supply module is used for accessing an external power supply, the second input end of the power supply module is used for accessing a dimming signal, and the output end of the power supply module is connected with the light emitting diode module and used for outputting stable current matched with the dimming signal to the light emitting diode module; the output end of the color matching driving module is connected with the light-emitting diode module and used for outputting a level signal matched with the color matching signal to the light-emitting diode module; the LED module is used for adjusting the brightness of each LED under the action of the stable current and adjusting the color temperature of each LED under the action of the level signal. The power supply module can be effectively ensured to output stable current, the problem of light flicker is avoided, the color mixing stability is ensured, the circuit control logic and the circuit design are simpler, and the realization cost of the circuit is reduced.
Description
Technical Field
The utility model relates to a mixing of colors field of adjusting luminance particularly, relates to a mixing of colors power supply unit adjusts luminance.
Background
Because Light Emitting Diodes (LEDs) have many advantages such as energy saving, environmental protection, Light control, solidification, and long life, they are widely used in various illumination fields today when low-carbon life is advocated. In the use process of the light emitting diode, the light emitting diode has the requirement of dimming and color mixing. Therefore, how to dim and color the light emitting diodes is a problem to be solved.
At present, the light emitting diodes can be dimmed and color-adjusted in a parallel connection mode of the same topological structure, two parallel circuits respectively adjust the brightness and color temperature of different color light emitting diodes, and the two outputs need to ensure the stability of the output current, so that the complexity of logic control and circuit structure is higher.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a not enough among the above-mentioned prior art, provide a mixing of colors power supply unit adjusts luminance, make the logic control of circuit clearer, circuit design is simpler, has reduced the circuit implementation cost simultaneously.
In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:
the utility model provides a mixing of colors power supply unit adjusts luminance, it includes to adjust luminance mixing of colors power supply unit: the device comprises a power supply module, a color mixing driving module and a light emitting diode module, wherein the light emitting diode module comprises at least one light emitting diode;
the first input end of the power supply module is used for accessing an external power supply, the second input end of the power supply module is used for accessing a dimming signal, and the output end of the power supply module is connected with the light emitting diode module and used for outputting a stable current matched with the dimming signal to the light emitting diode module;
the first input end of the color mixing driving module is used for being connected with an external power supply, the second input end of the color mixing driving module is used for being connected with a color mixing signal, and the output end of the color mixing driving module is connected with the light emitting diode module and used for outputting a level signal matched with the color mixing signal to the light emitting diode module;
the LED module is used for adjusting the brightness of each LED under the action of the stable current and adjusting the color temperature of each LED under the action of the level signal.
Optionally, an input end of the first switching unit is configured to access the dimming signal, and an output end of the first switching unit is connected to the first end of the energy storage unit and the other end of the freewheeling unit;
the second end of the energy storage unit is used for being connected with an external power supply and is connected with one end of the follow current unit, and the third end of the energy storage unit is connected with the light emitting diode module.
Optionally, the energy storage unit includes: a first resistor, a capacitor and an inductor;
one end of the first resistor is used for connecting an external power supply and is connected with one end of the follow current unit, the other end of the first resistor is respectively connected with one end of the capacitor and the light-emitting diode module, and the other end of the capacitor is respectively connected with the light-emitting diode module and one end of the inductor;
the other end of the inductor is connected with the output end of the first switch unit and the other end of the follow current unit respectively.
Optionally, the freewheeling unit includes: a first diode;
one end of the first diode is used for being connected with an external power supply and connected with one end of the first resistor, and the other end of the first diode is connected with the other end of the inductor.
Optionally, the first switch unit includes: a first field effect transistor;
the first end of the first field effect transistor is connected with the other end of the inductor, the second end of the first field effect transistor is grounded, and the third end of the first field effect transistor is used for being connected with the dimming signal.
Optionally, the light emitting diode module includes: the light-emitting diode device comprises a second switch unit and a light-emitting diode unit, wherein the light-emitting diode unit comprises at least one light-emitting diode;
one end of the light emitting diode unit is connected with the other end of the first resistor;
the first end of the second switch unit is connected with the other end of the light-emitting diode unit, the second end of the second switch unit is connected with the other end of the capacitor and is grounded, and the third end of the second switch unit is connected with the color-adjusting driving module.
Optionally, the second switch unit includes: the LED unit comprises a first field effect transistor, a third field effect transistor and a phase inverter, wherein the LED unit comprises a first LED and a second LED;
one end of the first light-emitting diode is connected with one end of the second light-emitting diode and the other end of the first resistor, and the other end of the first light-emitting diode is connected with the first end of the second field-effect tube;
the second end of the second field effect transistor is connected with the color modulation driving module, and the third end of the second field effect transistor is respectively connected with the color modulation driving module and the ground;
the other end of the second light-emitting diode is connected with the first end of the third field effect transistor;
the second end of the third field effect transistor is connected with one end of the phase inverter, the other end of the phase inverter is connected with the color modulation driving module and the other end of the second field effect transistor, and the third end of the third field effect transistor is respectively connected with the color modulation driving module and the ground.
Optionally, the color matching driving module includes: a voltage division unit and an isolation unit;
one end of the voltage division unit is used for accessing an external power supply, the other end of the voltage division unit is connected with one end of the isolation unit, and the other end of the isolation unit is used for accessing a color modulation signal;
the first output end of the voltage division unit is connected with the third end of the second field effect transistor and the other end of the phase inverter, and the second output end of the voltage division unit is connected with the second end of the second field effect transistor, the second end of the third field effect transistor and the ground.
Optionally, the voltage dividing unit includes: a second resistor, a second diode;
one end of the second resistor is used for being connected with an external power supply;
the other end of the second resistor, the third end of the second field effect transistor and the other end of the inverter are respectively connected with one end of the second diode;
the other end of the second diode is respectively connected with the second end of the second field effect transistor, the second end of the third field effect transistor, one end of the isolation unit and the ground;
optionally, the isolation unit includes: a light coupling element;
the first input end of the optical coupling element is used for accessing a color mixing signal, and the second input end of the optical coupling element is grounded;
a first output end of the optical coupling element is respectively connected with the other end of the second resistor and one end of the second diode;
and a second output end of the optical coupling element is connected with the other end of the second diode.
The utility model has the advantages that:
the light and color adjusting power supply device is provided with a power supply module, a color adjusting driving module and a light emitting diode module, wherein the light emitting diode module comprises at least one light emitting diode; the first input end of the power supply module is used for accessing an external power supply, the second input end of the power supply module is used for accessing a dimming signal, and the output end of the power supply module is connected with the light emitting diode module and used for outputting stable current matched with the dimming signal to the light emitting diode module; the first input end of the color mixing driving module is used for accessing an external power supply, the second input end of the color mixing driving module is used for accessing a color mixing signal, and the output end of the color mixing driving module is connected with the light emitting diode module and used for outputting a level signal matched with the color mixing signal to the light emitting diode module; the LED module is used for adjusting the brightness of each LED under the action of the stable current and adjusting the color temperature of each LED under the action of the level signal. The power supply module can be connected with the light emitting diode module in series to provide stable current for the light emitting diode module, so that the power supply module can be effectively ensured to output the stable current, the problem of light flicker is avoided, and the color mixing stability is ensured; level signals matched with the color mixing signals are output by the color mixing driving module to the light emitting diode module, so that the light emitting diode module can be subjected to color mixing according to the level signals, circuit control logic and circuit design are simpler, and the implementation cost of the circuit is reduced.
In addition, the second field effect tube and the third field effect tube are arranged to generate two paths of complementary signals, so that the color modulation of the first light emitting diode and the second light emitting diode is realized, and the control logic and the circuit design are simpler.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a dimming and toning power supply device provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power supply module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another power supply module provided in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of an LED module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another LED module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a color-mixing driving module according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another color-mixing driving module according to an embodiment of the present invention.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solution in the embodiments of the present invention, it should be understood that the drawings in the present invention only serve the purpose of illustration and description, and are not used to limit the protection scope of the present invention. Additionally, it should be understood that the schematic drawings are not necessarily drawn to scale. The flow chart used in the present invention shows the operation according to some embodiments of the present invention. It should be understood that the operations of the flow diagrams may be performed out of order, and that steps without logical context may be reversed in order or performed concurrently. In addition, those skilled in the art, under the direction of the present disclosure, may add one or more other operations to, or remove one or more operations from, the flowchart.
In addition, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
In daily life, the brightness and color temperature of the LED are often required to be adjusted. The brightness refers to the physical quantity of the surface luminescence (reflection) intensity of the luminous body (reflector), and the color temperature is a physical quantity used for defining the color of the light source in the lighting optics, that is, a certain blackbody is heated to a temperature, the color of the emitted light is the same as that of the light emitted by a certain light source, and the temperature heated by the blackbody is called the color temperature of the light source, which is called the color temperature of the light source for short.
In the technology of dimming and color mixing of the LED, the luminous intensity (or light radiation flux) of the LED and the working current of the LED are in a linear relation in a certain current range, namely the luminous intensity is increased along with the increase of the current, so that the luminous intensity can be changed by changing the current of the LED, and the dimming is realized.
As can be understood from the principle of colorimetry, if the three primary colors of red, green and blue are mixed, theoretically, an infinite number of colors can be obtained under a combination of appropriate luminance ratios of the three primary colors, and thus LEDs of three emission wavelengths can be used as long as they have, for example: the LEDs with three wavelengths of 470nm (blue), 525nm (green) and 620nm (red) can realize color regulation, namely color modulation, by lighting and current control.
Referring to fig. 1, it is a schematic structural diagram of a dimming and color mixing power supply device provided in an embodiment of the present invention, as shown in fig. 1, the device may include: the device comprises a power supply module 10, an LED module 11 and a color modulation driving module 12, wherein the LED module 11 comprises at least one LED.
With reference to fig. 1, a first input end of the power supply module 10 is used for accessing an external power supply, the external power supply can provide electric energy to the whole power supply module 10, a second input end of the power supply module 10 is used for accessing a dimming signal, the dimming signal can be controlled and output by a dimming driver or a single chip, the dimming signal can be a Pulse Width Modulation (PWM) signal, and the power supply module 10 can output a corresponding current according to the received dimming signal. The output end of the power supply module 10 is connected to one end of the LED module 11, and is configured to output a stable current matched with the dimming signal to the LED module 11, where the stable current does not change with time.
With continued reference to fig. 1, the first input terminal of the color-adjusting driving module 12 is connected to an external power supply, and the external power supply can supply power to the color-adjusting driving module 12; the second input end of the color-mixing driving module 12 is used for accessing a color-mixing signal, which may be a digital signal or an analog signal, and the color-mixing driving module 12 may be turned on or off according to the received color-mixing signal, for example, if the color-mixing signal is an analog signal high level, the color-mixing driving module is turned on to output a high level, and if the color-mixing signal is a digital signal 0, the color-mixing driving module is turned off.
With continued reference to fig. 1, the output end of the color-mixing driving module 12 is connected to the other end of the LED module, and is configured to output a level signal matched with the color-mixing signal to the LED module, where the level signal may include a high level and a low level, for example, if the color-mixing driving module 12 is turned on according to the received color-mixing signal, the color-mixing driving module 12 may output a high level signal to the LED module 11, and if the color-mixing driving module 12 is turned off according to the received color-mixing signal, the color-mixing driving module 12 may output a low level to the LED module 11.
The LED module 11 may adjust the brightness of each LED under the effect of the steady current input by the power supply module 10, for example, the greater the steady current is, the greater the brightness of the LED is, the LED module 11 may adjust the color temperature of each LED according to the level signal output by the color-adjusting driving module 12, and may warm or cool the color temperature of the LED, for example, if the LED that needs to be adjusted is turned on for a longer time according to the level signal, the color temperature of the corresponding LED may be warmed, and if the LED that needs to be adjusted is turned off for a longer time according to the level signal, the color temperature of the corresponding LED may be cooled.
In this embodiment, a power supply module, a color-mixing driving module and a light emitting diode module are arranged in the light-adjusting and color-mixing power supply device, and the light emitting diode module includes at least one light emitting diode; the first input end of the power supply module is used for accessing an external power supply, the second input end of the power supply module is used for accessing a dimming signal, and the output end of the power supply module is connected with the light emitting diode module and used for outputting stable current matched with the dimming signal to the light emitting diode module; the first input end of the color mixing driving module is used for accessing an external power supply, the second input end of the color mixing driving module is used for accessing a color mixing signal, and the output end of the color mixing driving module is connected with the light emitting diode module and used for outputting a level signal matched with the color mixing signal to the light emitting diode module; the LED module is used for adjusting the brightness of each LED under the action of the stable current and adjusting the color temperature of each LED under the action of the level signal. The power supply module can be connected with the light emitting diode module in series to provide stable current for the light emitting diode module, so that the power supply module can be effectively ensured to output the stable current, the problem of light flicker is avoided, and the color mixing stability is ensured; level signals matched with the color mixing signals are output by the color mixing driving module to the light emitting diode module, so that the light emitting diode module can be subjected to color mixing according to the level signals, circuit control logic and circuit design are simpler, and the implementation cost of the circuit is reduced.
Referring to fig. 2, which is a schematic structural diagram of a power supply module according to an embodiment of the present invention, as shown in fig. 2, the power supply module 10 may include: the device comprises a first switching unit 101, an energy storage unit 102 and a follow current unit 103.
With reference to fig. 2, the input end of the first switch unit 101 is configured to access a dimming signal, the first switch unit 101 may be turned on or off according to the received dimming signal, the output end of the first switch unit 101 is connected to the first end of the energy storage unit 102 and the other end of the freewheeling unit 103, and specifically, the output end of the first switch unit 101 may be electrically connected to the first end of the energy storage unit 102 and the other end of the freewheeling unit 103 through a wire.
The second end of the energy storage unit 102 is used for accessing an external power supply and is connected with one end of the follow current unit 103, specifically, the second end of the energy storage unit 102 may be electrically connected with the external power supply and one end of the follow current unit 103 through a wire, the third end of the energy storage unit 102 is connected with the LED module 11, and specifically, the third end of the energy storage unit 102 may be electrically connected with the LED module 11 through a wire.
If the first switch unit 101 is turned on, the external power supply connected to the energy storage unit 102 can provide electric energy to the energy storage unit 102, the energy storage unit 102 stores the electric energy, when the first switch unit 101 is turned off, the energy storage unit 102 and the freewheeling unit 103 form a loop, the energy storage unit 102 can discharge at this time, and then the energy storage unit 102 can provide stable current to the LED module connected to the third end of the energy storage unit.
Referring to fig. 3, which is a schematic structural diagram of another power supply module according to an embodiment of the present invention, as shown in fig. 3, the energy storage unit 102 may include: first resistor 1021, capacitor 1022, and inductor 1023.
With reference to fig. 3, one end of the first resistor 1021 is used for connecting an external power supply and being connected to one end of the follow current unit 103, specifically, one end of the first resistor 1021 may be electrically connected to one end of the external power supply and one end of the follow current unit through a wire, the other end of the first resistor 1021 is connected to one end of the capacitor 1022 and the LED module 11, and the other end of the capacitor 1022 is connected to one end of the LED module 11 and one end of the inductor 1023.
With continued reference to fig. 3, the other end of the inductor 1023 is connected to the output end of the first switch unit 101 and the other end of the freewheeling unit 103, respectively, and specifically, the other end of the inductor 1023 may be electrically connected to the output end of the first switch unit 101 and the other end of the freewheeling unit 103 through wires.
For example, the first resistor 1021 may be a sampling resistor, such as a plug resistor, a chip resistor, and when the voltage applied across the sampling resistor is constant, the current of the sampling resistor may be changed by changing the resistance of the sampling resistor, and the first resistor 1021 may also be a carbon film resistor, a wire wound resistor, and the like.
For example, if the first switch unit 101 is turned on, the external power supply charges the capacitor 1022, the inductor 1023 is magnetized, the current flowing through the inductor increases linearly, and the energy storage unit 102 stores energy.
With continued reference to fig. 3, the freewheel unit 103 may include: a first diode 1031.
Optionally, one end of the first diode 1031 is used for accessing an external power source and being connected to one end of the first resistor 1021, specifically, one end of the first diode 1031 may be electrically connected to one end of the external power source and the first resistor 1021 through a wire, respectively, the other end of the first diode 1031 is connected to the inductor 1023, and specifically, the other end of the first diode 1031 may be electrically connected to the inductor 1023 through a wire.
Illustratively, when the first switch unit 101 is turned off, the first resistor 1021, the capacitor 1022, the inductor 1023, the light emitting diode module and the first diode 1031 form a loop, and the inductor 1023 discharges through the first diode 1031, wherein the current of the inductor 1023 linearly decreases, and then the output voltage is maintained by the discharge of the capacitor 1022 and the decreased inductor current, and then a stable current can be output to the LED module through the first resistor 1021.
With continued reference to fig. 3, the first switching unit 101 may include: a first fet 1011.
Optionally, a first end of the first field-effect transistor 1011 is connected to the other end of the inductor 1023, a second end of the first field-effect transistor 1011 is grounded, and a third end of the first field-effect transistor 1011 is used for receiving a dimming signal.
The first field effect transistor 1011 can include a depletion type field effect transistor and an enhancement type field effect transistor, when the third terminal of the first field effect transistor 1011 receives the dimming signal and can reach the on condition of the first field effect transistor 1011, the first field effect transistor 1011 is turned on, and when the third terminal of the first field effect transistor 1011 receives the dimming signal and does not reach the on condition of the first field effect transistor 1011, the first field effect transistor 1011 is turned off.
For example, the first fet 1011 can be an N-channel enhancement fet, and the first terminal of the first fet 1011 is a drain (D) of the fet, the second terminal is a gate (G) of the fet, and the third terminal is a source (S) of the fet.
Optionally, the current output by the first resistor 1021 can be adjusted by the duty cycle of the dimming signal, if the current required to be output by the first resistor 1021 is 50ma and the duty cycle of the dimming signal is 100ma when fully opened, the duty cycle of the dimming signal can be opened by only fifty percent, so that the output current of the first resistor is 50ma, where the duty cycle of the dimming signal can be adjusted according to actual needs, and the embodiment of the present application does not limit this.
In this embodiment, can realize exporting stabilization current to the LED module through setting up first switch unit, energy storage unit, afterflow unit, can effectively guarantee that the electric current of LED module is stable and not influenced by other factors, avoid appearing the problem of light scintillation to the stability of mixing of colors has been guaranteed.
Referring to fig. 4, which is a schematic structural diagram of an LED module according to an embodiment of the present invention, as shown in fig. 4, the LED module 11 may include: a second switch unit 111 and an LED unit 112, wherein the LED unit 112 includes at least one light emitting diode.
Alternatively, one end of the LED unit 112 is connected to the other end of the first resistor 1021, and specifically, one end of the LED unit 112 may be electrically connected to the other end of the first resistor 1021 through a wire.
Optionally, a first end of the second switch unit 111 is connected to the other end of the LED unit, specifically, the first end of the second switch unit 111 may be electrically connected to the other end of the LED unit through a wire, a second end of the second switch unit 111 is connected to the other end of the capacitor 1022 and commonly grounded, where the ground may be an analog ground, for example, AGND may be used as a reference voltage of the second switch unit 111, and a third end of the second switch unit 111 is connected to the toning driving module 12.
The second switch unit 111 may control on or off of the LED unit 112 by switching on or off of a switch.
Referring to fig. 5, which is a schematic structural diagram of another LED module according to an embodiment of the present invention, as shown in fig. 5, the second switch unit 111 may include: a second field effect transistor 1111, a third field effect transistor 1112, and an inverter 1113; the LED unit 112 may include: a first light emitting diode 1121 and a second light emitting diode 1122.
Optionally, one end of the first light emitting diode 1121 is connected to one end of the second light emitting diode 1122 and the other end of the first resistor 1021, and the other end of the first light emitting diode 1121 is connected to a first end of the second field effect transistor 1111, specifically, one end of the first light emitting diode 1121 may be electrically connected to one end of the second light emitting diode 1122 and the other end of the first resistor 1021 through wires, and the other end of the first light emitting diode 1121 may be electrically connected to a first end of the second field effect transistor 1111 through wires.
The first resistor 1021 can provide a stable current to the first light emitting diode 1121 and the second light emitting diode 1122 together.
Optionally, the second terminal of the second fet 1111 is connected to the color-tuning driving module 12, the third terminal of the second fet 1111 is connected to the color-tuning driving module 12 and ground, where the ground is analog ground, and is used as a reference voltage of the third terminal of the second fet 1111, for example, AGND may be used for identification, the color-tuning driving module 12 may output a level matching with the color-tuning signal to the second fet 1111, and if the color-tuning driving module 12 outputs a high level, the level received by the second terminal of the second fet 1111 is a high level.
For example, the second fet 1111 may be an N-channel enhancement fet, and the first terminal of the second fet 1111 is a drain (D) of the fet, the second terminal is a gate (G) of the fet, and the third terminal is a source (S) of the fet.
Optionally, the other end of the second led 1122 is connected to the first end of the third fet 1112.
Optionally, the second terminal of the third fet 1112 is connected to one terminal of the inverter 1113, the other terminal of the inverter 1113 is connected to the color modulation driving module 12 and the other terminal of the second fet 1111, and the third terminal of the third fet 1112 is connected to the color modulation driving module 12 and the ground, respectively, where the ground is an analog ground, and is used as a reference voltage of the third terminal of the third fet 1112, for example, AGND may be used as the reference voltage, and the inverter 1113 may negate the level output by the color modulation driving module 12, so that if the color modulation driving module 12 outputs a high level, the level reaching the second terminal of the third fet 1112 through the inverter 1113 is a low level.
Illustratively, the inverter 1113 may include a CMOS inverter, a TTL inverter, a PMOS inverter, and the like.
For example, the third fet 1112 may be an N-channel enhancement fet, and the first terminal of the third fet 1112 is a drain (D), the second terminal is a gate (G), and the third terminal is a source (S) of the fet.
In this embodiment, the third fet 1112 is connected to the inverter 1113, so that the level signal received by the third fet 1112 and the level signal received by the second fet 1111 are complementary signals, and the first led 1121 and the second led 1122 are prevented from being turned on or off simultaneously, that is, the first led 1121 and the second led 1122 are turned on and color-adjusted by turning on and off the second fet 1111 and the third fet 1112.
Referring to fig. 6, which is a schematic structural diagram of a color-mixing driving module provided in an embodiment of the present invention, as shown in fig. 6, the color-mixing driving module 12 may include: a voltage dividing unit 121 and an isolating unit 122.
Optionally, one end of the voltage dividing unit 121 is used for accessing an external power supply, and the other end of the voltage dividing unit 121 is connected to one end of the isolating unit 122, specifically, the other end of the voltage dividing unit 121 may be electrically connected to one end of the isolating unit 122 through a wire, and the other end of the isolating unit 122 is used for accessing a color modulation signal.
The isolation unit 122 can be turned on or off according to the accessed toning signal, so as to control the voltage dividing unit connected to the isolation unit 122 to output a level matched with the toning signal.
For example, if the isolation unit 122 is turned on, the voltage dividing unit 121 may output a low level, and if the isolation unit 122 is turned off, the voltage dividing unit 121 may output a high level.
Optionally, the first output terminal of the voltage divider 121 is connected to the third terminal of the second fet 1111 and the other terminal of the inverter 1113, and the second output terminal of the voltage divider 121 is connected to the second terminal of the second fet 1111, the second terminal of the third fet 1112, and the ground, where the ground may be analog ground.
For example, the VGS voltage (gate-source voltage) of the second field effect transistor 1111 may be a corresponding voltage output by the voltage dividing unit 121, and if the received voltage satisfies the conduction condition of the second field effect transistor 1111, the second field effect transistor 1111 is turned on, so as to light the first light emitting diode 1121.
For example, the VGS voltage of the third fet 1112 may be a voltage obtained by inverting the output voltage of the voltage dividing unit 121 through the inverter 1113, and if the inverted voltage does not satisfy the on condition of the third fet 1112, the third fet 1112 is turned off, so as to turn off the second led 1122.
For example, in the color modulation process, the light emitting diode can be correspondingly color-modulated by adjusting the time for turning on or turning off the field effect transistor. If the first light emitting diode 1121 is white light and the second light emitting diode 1122 is yellow light, then if the white light is needed to be seen, the second fet 1111 corresponding to the white light of the first light emitting diode 1121 is turned on for a longer time and turned off for a shorter time, and the third fet 1112 corresponding to the yellow light of the second light emitting diode 1122 is turned off for a longer time and turned on for a shorter time, so that the white light is brighter and the yellow light is darker.
Referring to fig. 7, which is a schematic structural diagram of another color-mixing driving module provided in an embodiment of the present invention, as shown in fig. 7, the voltage dividing unit 121 may include: a second resistor 1211 and a second diode 1212.
Optionally, one end of the second resistor 1211 is connected to an external power source, and the external power source can supply power to the second resistor 1211, and the other end of the second resistor 1211, the third terminal of the second field effect transistor 1111 and the other end of the inverter 1113 are respectively connected to the second diode 1212.
Optionally, the other end of the second diode 1212 is connected to the second terminal of the second fet 1111, the second terminal of the third fet 1112, one end of the isolation unit 122, and ground, respectively.
The VGS voltage of the second fet 1111 is the voltage of the second diode 1212, and the VGS voltage of the third fet 1112 is the opposite voltage of the second diode 1212.
With continued reference to fig. 6, the isolation unit 122 may include: the optical coupling element 1221.
Optionally, a first input end of the optical coupler element 1221 is used to access the color matching signal, and a second input end of the optical coupler element 1221 is grounded.
Optionally, a first output end of the optical coupler element 1221 is connected to the other end of the second resistor 1211 and one end of the second diode 1212, respectively, and a second output end of the optical coupler element 1221 is connected to the other end of the second diode.
For example, if the voltage across the second diode 1212 is 0 when the optical coupler 1221 is turned on according to the color modulation signal, the VGS of the second field effect transistor 1111 is at a low level, the second field effect transistor 1111 is not turned on, and the first light emitting diode 1121 is turned off, the VGS of the third field effect transistor 1112 is at a high level through the inverter, and the third field effect transistor 1112 is turned on, and the second light emitting diode 1122 is turned on.
For example, when the optical coupling element 1221 is turned off according to the color modulation signal, and the second diode 1212 divides the voltage according to the voltage stabilizing characteristic of the diode, the voltage across the second diode 1212 is, for example, 5v, the VGS level of the second field effect transistor 1111 is high, the second field effect transistor 1111 is turned on, the first light emitting diode 1121 is turned on, the VGS voltage of the third field effect transistor 1112 is low through the inverter, and the third field effect transistor 1112 is turned off, and the second light emitting diode 1122 is turned off.
In this embodiment, the optical coupling element is turned on or off according to the color modulation signal to turn on or off the first light emitting diode and the second light emitting diode, thereby implementing the color modulation function.
The above is only the embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.
Claims (10)
1. A dimming and toning power supply device is characterized by comprising: the device comprises a power supply module, a color mixing driving module and a light emitting diode module, wherein the light emitting diode module comprises at least one light emitting diode;
the first input end of the power supply module is used for accessing an external power supply, the second input end of the power supply module is used for accessing a dimming signal, and the output end of the power supply module is connected with the light emitting diode module and used for outputting a stable current matched with the dimming signal to the light emitting diode module;
the first input end of the color mixing driving module is used for being connected with an external power supply, the second input end of the color mixing driving module is used for being connected with a color mixing signal, and the output end of the color mixing driving module is connected with the light emitting diode module and used for outputting a level signal matched with the color mixing signal to the light emitting diode module;
the LED module is used for adjusting the brightness of each LED under the action of the stable current and adjusting the color temperature of each LED under the action of the level signal.
2. The dimming and toning power supply device according to claim 1, wherein the power supply module comprises: the device comprises a first switch unit, an energy storage unit and a follow current unit;
the input end of the first switch unit is used for accessing the dimming signal, and the output end of the first switch unit is connected with the first end of the energy storage unit and the other end of the follow current unit;
the second end of the energy storage unit is used for being connected with an external power supply and is connected with one end of the follow current unit, and the third end of the energy storage unit is connected with the light emitting diode module.
3. The dimming and toning power supply device according to claim 2, wherein the energy storage unit includes: a first resistor, a capacitor and an inductor;
one end of the first resistor is used for connecting an external power supply and is connected with one end of the follow current unit, the other end of the first resistor is respectively connected with one end of the capacitor and the light-emitting diode module, and the other end of the capacitor is respectively connected with the light-emitting diode module and one end of the inductor;
the other end of the inductor is connected with the output end of the first switch unit and the other end of the follow current unit respectively.
4. The dimming and toning power supply device according to claim 3, wherein the freewheel unit includes: a first diode;
one end of the first diode is used for being connected with an external power supply and is connected with one end of the first resistor, and the other end of the first diode is connected with the other end of the inductor.
5. The dimming and toning power supply device according to claim 4, wherein the first switching unit includes: a first field effect transistor;
the first end of the first field effect transistor is connected with the other end of the inductor, the second end of the first field effect transistor is grounded, and the third end of the first field effect transistor is used for being connected with the dimming signal.
6. The dimming and toning power supply device according to claim 1, wherein the light emitting diode module comprises: the light-emitting diode device comprises a second switch unit and a light-emitting diode unit, wherein the light-emitting diode unit comprises at least one light-emitting diode;
one end of the light emitting diode unit is connected with the other end of the first resistor;
the first end of the second switch unit is connected with the other end of the light-emitting diode unit, the second end of the second switch unit is connected with the other end of the capacitor and grounded, and the third end of the second switch unit is connected with the color-adjusting driving module.
7. The dimming and toning power supply device according to claim 6, wherein the second switching unit includes: the LED unit comprises a first field effect transistor, a third field effect transistor and a phase inverter, wherein the LED unit comprises a first LED and a second LED;
one end of the first light-emitting diode is connected with one end of the second light-emitting diode and the other end of the first resistor, and the other end of the first light-emitting diode is connected with the first end of the second field-effect tube;
the second end of the second field effect transistor is connected with the color modulation driving module, and the third end of the second field effect transistor is respectively connected with the color modulation driving module and the ground;
the other end of the second light-emitting diode is connected with the first end of the third field effect transistor;
the second end of the third field effect transistor is connected with one end of the phase inverter, the other end of the phase inverter is connected with the color modulation driving module and the other end of the second field effect transistor, and the third end of the third field effect transistor is respectively connected with the color modulation driving module and the ground.
8. The dimming and toning power supply device according to claim 1, wherein the toning driving module comprises: a voltage division unit and an isolation unit;
one end of the voltage division unit is used for accessing an external power supply, the other end of the voltage division unit is connected with one end of the isolation unit, and the other end of the isolation unit is used for accessing a color modulation signal;
the first output end of the voltage division unit is connected with the third end of the second field effect transistor and the other end of the phase inverter, and the second output end of the voltage division unit is connected with the second end of the second field effect transistor, the second end of the third field effect transistor and the ground.
9. The dimming and toning power supply device according to claim 8, wherein the voltage dividing unit includes: a second resistor and a second diode;
one end of the second resistor is used for being connected with an external power supply;
the other end of the second resistor, the third end of the second field effect transistor and the other end of the inverter are respectively connected with one end of the second diode;
the other end of the second diode is respectively connected with the second end of the second field effect transistor, the second end of the third field effect transistor, one end of the isolation unit and the ground.
10. The dimming and toning power supply device according to claim 8, wherein the isolation unit includes: a light coupling element;
the first input end of the optical coupling element is used for accessing a color mixing signal, and the second input end of the optical coupling element is grounded;
a first output end of the optical coupling element is respectively connected with the other end of the second resistor and one end of the second diode;
and a second output end of the optical coupling element is connected with the other end of the second diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220767409.6U CN217216952U (en) | 2022-03-31 | 2022-03-31 | Light and color adjusting power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220767409.6U CN217216952U (en) | 2022-03-31 | 2022-03-31 | Light and color adjusting power supply device |
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| Publication Number | Publication Date |
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| CN217216952U true CN217216952U (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220767409.6U Active CN217216952U (en) | 2022-03-31 | 2022-03-31 | Light and color adjusting power supply device |
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| CN (1) | CN217216952U (en) |
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- 2022-03-31 CN CN202220767409.6U patent/CN217216952U/en active Active
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